Sash-fastener



(No Model.) i

J. EBERHARDT.

SASH PASTBNBR. i NQ. 398,884. Patented Mar. 5, 1889.

l I l I il JZ UNITED STATES PATENT OFFICE.

JACOB EBERI-IARDT, OF CHICAGO, ILLINOIS.

SASH-FASTEN ER.

SPECFCATION forming part of Letters Patent No. 398,884, dated March 5, 1889.

Application tiled January '7, 1889. Serial No. 295,658. (No model.)

provement in Sash-liasteners, of which the following is a speciiication, reference being` had to the accompanying drawii'igsin which- Figure l. shows my device applied in position for use with a window-sash, the meetingrails ol' the sashes and the window-panes bei ing in section. Fig. 9 is an under side view of the device in position to allow the windowsash to be moved, and showing also in dotted lines its locking positions. Fig. is a section at line 53 23 of Fig. 2. Fig. 4 is a bottom view of the plate, one end being broken off. Fig. 5 is a` section at line 5 5 of Fig. i. Fig. o is a modification, being a section through a. portion of a window sash and casing, looking down, some portions of m5' device being also in section.

This invention relates to inflow-sash t'asteners, and has for its object to construct. a lfastener that will be simple in construction, easily operated, and will hold the windowsash in anyv desired position; and its nature consists in the several parts and combinations of parts hereinafter deseribethand pointed out in the claims as new.

In the drawings, A represents a cam, one edge of which is roughened or serrated, as shown. At the side opposite to this roughcned or serrated edge is a short kn ol or handle, c, on one face of the cam A.

B is a. metal plate provided, as shown, with a semicircular slot, l), thiiough which the knob or handle c. projects when the parts are in position for use. The cam A and plate ,B are pivoted together b v the pivot e.

d is a. spring-actuated pin plmftfal in a soci.' et in the cam A between the slot o and pivot c, as shown 'in liig. li.

e is a curved groove cui in the under [face of the j )late li in position to :receive the head ot' the pin d when the plate and cam are in position. This groove is cut deeper at. its ends than at its center, or double inclined, as shown in Fig. 5. At the center of this groove is a slight (lep1essio11, 7l

g is a metal strip having a roughened or l serrated face and secured to the side of the window-sash.

In use the plate B is secured to the side of the window-casing by screws or otherwise, the cam A entering a. recess cut in the window-casing, such recess being of sufficient size to allow the cam to be turned freely. The side of the recess next to the window is to be cut away, so that the serrated edge of the cam can project and come in contact with the roughened or serrated metal strip g, which is applied to protect the sash, but which in the cheaper forms of sashes may be omitted, or when the sash is counterbalanced.

IVhen it is desired to raise or lower the sash, the cam is moved by means of the knob or handle oy until such knob or handle is at the center of the slot l), when the cam will be in the position shown in full lines in Fig. 2 and out of contact with the strip g or the sash. When in this position, the pin d will by the action of the spring be forced into the depression f and hold the cam against accidental movement. When the window has been opened as desired, the knob or handle c is moved toward the end ot the slot b until it brings the cam against the sash 0r strip g and holds the sash tirmlv. By reason of the peculiar shape given to the groove e, in which the head of the pin d slides, the cam cannot easilyv be shifted from the position in which it is set without taking hold of the knob 0r handle ct or giving the sash a slight reverse movement. Then the strip g is omitted, a simple roughing of the cani will be suficient.

In Fig. G I have shown a modification for anV upper sash in which the cam A is secured to a rock-shaft which runs through the window-casing, the cam in this construction act.- ing against the edge of the sash instead of against its tace, or against a strip, as g, secured to the sash. This rock-shaft is operated by a crank, to which the spring-actuated pin d is secured. A plate Vis attached to the tace et' the casing, which plate is provided on its outer lace with the groove c, having the central depressioinf, into which the pin d on the crank projects, as and for the purpose already set forth.

That I claim as new, and desire to secure by Letters Patent, is as follows:

IOO

l. The cam A, provided with a handle, a, and a central depression, f, n combination in combination with the plate B, having a with the sprngQaetuated pin d, substantially Io curved groove, e, and I[he spring-actuated pin as and for the purpose specified.

. d, substantially as and for the purpose speci- 5 ed JACOB EBERHARDT.

2. The Caln A, having a serrated edge, and Ttnessesz plate B, having a curved groove, e, having its ALBERT H. ADAMS,

bottom oppostely inclined toward its ends, HARRY T. JONES. 

